Calica, J. H. (2002). "Für eine neue deutsche Nationaloper": Opera in the discourses of unification and legitimation in the German Democratic Republic. Music and German national identity.
Lua i Stíl Chicago (17ú heag.)Calica, Joy Haslam. ""Für Eine Neue Deutsche Nationaloper": Opera in the Discourses of Unification and Legitimation in the German Democratic Republic." Music and German National Identity 2002.
Lua MLA (8ú heag.)Calica, Joy Haslam. ""Für Eine Neue Deutsche Nationaloper": Opera in the Discourses of Unification and Legitimation in the German Democratic Republic." Music and German National Identity, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.